Signatura
N - Fine Arts
53
D - World History
50
T - Technology
26
P - Language and Literature
14
F - General American History
11
M - Music
7
H - Social Science
5
Q - Science
5
B - Philosophy, Psychology, Religion
3
S - Agriculture
3
E - United States History
2
G - Geography, Anthropology, Recreation
2
J - Political Science
2
R - Medicine
1
U - Military Science
1